Question 1

Neon has 10 electrons. What is the value of  ZZZ  of the next higher element that has chemical properties very similar to those of neon?

Accepted Answer

A)   19
B)   11
C)   18
D)   17
E)   36

Question 2

A tiny dust particle of mass $8.50 \mu \mathrm { g }$ is being observed under a microscope. Its position is determined to be within a space of $0.0060 \mathrm {~mm}$. ( $h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s }$ )
(a) Find the uncertainty in its speed implied by the uncertainty in its position.
(b) Assuming the dust particle is moving at the speed in part (a), how many years would it take for the particle to move $1.0 \mathrm {~mm}$ ?

Accepted Answer

The answer of A tiny dust particle of mass \(8.50...

Question 3

Suppose that the speed of an electron traveling  2.0 km/s2.0 \mathrm {~km} / \mathrm { s }2.0 km/s  is known to an accuracy of 1 part in  10510 ^ { 5 }105  (i.e., within  0.0010%0.0010 \%0.0010%  ) . What is the least possible uncertainty within which we can determine the position of this electron? (  melectron =9.11×10−31 kg,h=6.626×10−34 J⋅s) \left. m _ { 	ext {electron } } = 9.11 	imes 10 ^ { - 31 } \mathrm {~kg} , h = 6.626 	imes 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } ight) melectron ​=9.11×10−31 kg,h=6.626×10−34 J⋅s)

Accepted Answer

A)    2.0 mm2.0 \mathrm {~mm}2.0 mm 
B)    14 cm14 \mathrm {~cm}14 cm 
C)    5.8 mm5.8 \mathrm {~mm}5.8 mm 
D)    14 mm14 \mathrm {~mm}14 mm 
E)    8.5 nm8.5 \mathrm {~nm}8.5 nm

Question 4

How many values of the magnetic quantum number, mʆ, correspond to a value of ʆ = 4?

Accepted Answer

A)   7
B)   5
C)   9
D)   8
E)   3

Question 5

A hydrogen atom is in the 6h state. Which one of the following is not a magnetic quantum number for that state?

Accepted Answer

A)   2
B)   4
C)   1
D)   6
E)   0

Question 6

In a hydrogen atom, a given electron has n = 7. How many possible values can ʆ have?

Accepted Answer

A)   6
B)   98
C)   7
D)   15

Question 7

What is the electron configuration for Li, which has 3 electrons?

Accepted Answer

A)    1s22s11 s ^ { 2 } 2 s 11s22s1 
B)    1s21p11 s ^ { 2 } 1 p ^ { 1 }1s21p1 
C)    1s12s21 s ^ { 1 } 2 s ^ { 2 }1s12s2 
D)    1s12s13s11 s ^ { 1 } 2 s ^ { 1 } 3 s 11s12s13s1 
E)    1s31 s ^ { 3 }1s3

Question 8

According to Pauli's exclusion principle, how many electrons in an atom may have a particular set of quantum numbers?

Accepted Answer

A)   4
B)   5
C)   2
D)   3
E)   1

Question 9

The magnetic quantum number m1 can have any integer value ranging from

Accepted Answer

A)    −ℓ-\ell−ℓ  to  +ℓ+ \ell+ℓ 
B)   0 to  nnn .
C)   0 to  ℓ\ellℓ .
D)    −n- n−n  to  +n+ n+n .
E)   0 to  (n−1) ( n - 1 ) (n−1)

Question 10

What is the minimum uncertainty in determining the position of an electron if the speed of the electron is  6.0 km/s6.0 \mathrm {~km} / \mathrm { s }6.0 km/s  within an accuracy of  0.0040%0.0040 \%0.0040%  ? (melectron  =9.11×10−31 kg,h=6.626×10−34= 9.11 	imes 10 ^ { - 31 } \mathrm {~kg} , h = 6.626 	imes 10 ^ { - 34 }=9.11×10−31 kg,h=6.626×10−34   J⋅s) \mathrm { J } \cdot \mathrm { s } ) J⋅s)

Accepted Answer

A)    0.15 mm0.15 \mathrm {~mm}0.15 mm 
B)    0.11 mm0.11 \mathrm {~mm}0.11 mm 
C)    0.24 mm0.24 \mathrm {~mm}0.24 mm 
D)    0.48 mm0.48 \mathrm {~mm}0.48 mm 
E)    0.34 mm0.34 \mathrm {~mm}0.34 mm

Question 11

If you confine an electron to a box and know that the uncertainty in the electron's speed is  65 m/s65 \mathrm {~m} / \mathrm { s }65 m/s , what is the smallest length that the box could have? (melectron  =9.11×10−31 kg,h=6.626×10−34= 9.11 	imes 10 ^ { - 31 } \mathrm {~kg} , h = 6.626 	imes 10 ^ { - 34 }=9.11×10−31 kg,h=6.626×10−34  J.s)

Accepted Answer

A)    1.8×10−5 m1.8 	imes 10 ^ { - 5 } \mathrm {~m}1.8×10−5 m 
B)    8.4×10−6 m8.4 	imes 10 ^ { - 6 } \mathrm {~m}8.4×10−6 m 
C)    1.1×10−5 m1.1 	imes 10 ^ { - 5 } \mathrm {~m}1.1×10−5 m 
D)    5.8×10−6 m5.8 	imes 10 ^ { - 6 } \mathrm {~m}5.8×10−6 m 
E)    1.8×10−6 m1.8 	imes 10 ^ { - 6 } \mathrm {~m}1.8×10−6 m

Question 12

How many electrons can be found with principal quantum number n = 3 in a suitably heavy atom?

Accepted Answer

A)   18
B)   6
C)   9
D)   20

Question 13

What is the maximum number of electrons that can occupy the g subshell?

Accepted Answer

A)   18
B)   22
C)   14
D)   10

Question 14

The only invalid electron state and shell designation among the following is

Accepted Answer

A)    3d,M(n=3) 3 d , \mathrm { M } ( n = 3 ) 3d,M(n=3)   shell.
B)    3s,M(n=3) 3 s , \mathrm { M } ( n = 3 ) 3s,M(n=3)   shell.
C)    2d, L(n=2) 2 d , \mathrm {~L} ( n = 2 ) 2d, L(n=2)   shell.
D)    1s, K(n=1) 1 s , \mathrm {~K} ( n = 1 ) 1s, K(n=1)   shell.
E)    2s,L(n=2) 2 s , L ( n = 2 ) 2s,L(n=2)   shell.

Question 15

A hydrogen atom is in the 6h state. What is the principal quantum number.

Accepted Answer

A)   6
B)   7
C)   5
D)   0
E)   3

Question 16

For an electron in the M $( n = 3 )$ shell, find (a) the largest possible orbital angular momentum it can have, and (b) the smallest possible orbital angular momentum it can have. Express your answers in SI units, and for each case indicate the subshell $( s , p , d , \ldots )$ of the electron. $\left( h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$

Accepted Answer

The answer of For an electron in the M \((...

Question 17

Write out the electron configuration for the ground state of the phosphorus atom, which has 15 electrons.

Accepted Answer

The answer of Write out the electron configuration for the...

Question 18

What is the greatest magnitude of the orbital angular momentum  LLL  that you can find in a state with  n=6n = 6n=6  ?

Accepted Answer

A)    5.92h2π5.92 \frac { h } { 2 \pi }5.922πh​ 
B)    6.48h2π6.48 \frac { h } { 2 \pi }6.482πh​ 
C)    6h2π6 \frac { h } { 2 \pi }62πh​ 
D)    5.48h2π5.48 \frac { h } { 2 \pi }5.482πh​

Question 19

A baseball has mass  143 g143 \mathrm {~g}143 g  and a speed of  45 m/s45 \mathrm {~m} / \mathrm { s }45 m/s , with the speed known to within  0.10%0.10 \%0.10% . What is the minimum uncertainty in the position of the baseball?  (h=6.626×10−34 J⋅s) \left( h = 6.626 	imes 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } ight) (h=6.626×10−34 J⋅s)

Accepted Answer

A)    1.6×10−32 m1.6 	imes 10 ^ { - 32 } \mathrm {~m}1.6×10−32 m 
B)    1.8 nm1.8 \mathrm {~nm}1.8 nm 
C)    1.4×10−32 m1.4 	imes 10 ^ { - 32 } \mathrm {~m}1.4×10−32 m 
D)    1.4×10−30 m1.4 	imes 10 ^ { - 30 } \mathrm {~m}1.4×10−30 m 
E)    1.6×10−30 m1.6 	imes 10 ^ { - 30 } \mathrm {~m}1.6×10−30 m

Question 20

According to the quantum mechanical model of the hydrogen atom, if the principal quantum number is n, how many different orbital angular momentum quantum numbers are permitted?

Accepted Answer

A)   2n
B)   4n
C)   3n
D)   n
E)   n/2

Exam 28: Quantum Mechanics of Atoms

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Correct Answer
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Neon has 10 electrons. What is the value of $Z$ of the next higher element that has chemical properties very similar to those of neon?

Correct Answer
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A baseball has mass $143 \mathrm {~g}$ and a speed of $45 \mathrm {~m} / \mathrm { s }$ , with the speed known to within $0.10 \%$ . What is the minimum uncertainty in the position of the baseball? $\left( h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$

Correct Answer
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Correct Answer
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In a hydrogen atom, a given electron has n = 7. How many possible values can ʆ have?

Correct Answer
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According to Pauli's exclusion principle, how many electrons in an atom may have a particular set of quantum numbers?

Correct Answer
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The magnetic quantum number m1 can have any integer value ranging from

Correct Answer
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A hydrogen atom is in the 6h state. What is the principal quantum number.

Correct Answer
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How many values of the magnetic quantum number, mʆ, correspond to a value of ʆ = 4?

Correct Answer
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Write out the electron configuration for the ground state of the phosphorus atom, which has 15 electrons.

Correct Answer
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According to the quantum mechanical model of the hydrogen atom, if the principal quantum number is n, how many different orbital angular momentum quantum numbers are permitted?

Correct Answer
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What is the electron configuration for Li, which has 3 electrons?

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How many electrons can be found with principal quantum number n = 3 in a suitably heavy atom?

Correct Answer
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If you confine an electron to a box and know that the uncertainty in the electron's speed is $65 \mathrm {~m} / \mathrm { s }$ , what is the smallest length that the box could have? (melectron $= 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , h = 6.626 \times 10 ^ { - 34 }$ J.s)

Correct Answer
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What is the maximum number of electrons that can occupy the g subshell?

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What is the greatest magnitude of the orbital angular momentum $L$ that you can find in a state with $n = 6$ ?

Correct Answer
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The only invalid electron state and shell designation among the following is

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Correct Answer
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A hydrogen atom is in the 6h state. Which one of the following is not a magnetic quantum number for that state?

Correct Answer
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Exam 28: Quantum Mechanics of Atoms

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Neon has 10 electrons. What is the value of ZZZ of the next higher element that has chemical properties very similar to those of neon?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In a hydrogen atom, a given electron has n = 7. How many possible values can ʆ have?

Correct AnswerverifiedShow Answer

According to Pauli's exclusion principle, how many electrons in an atom may have a particular set of quantum numbers?

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The magnetic quantum number m1 can have any integer value ranging from

Correct AnswerverifiedShow Answer

A hydrogen atom is in the 6h state. What is the principal quantum number.

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How many values of the magnetic quantum number, mʆ, correspond to a value of ʆ = 4?

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Write out the electron configuration for the ground state of the phosphorus atom, which has 15 electrons.

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According to the quantum mechanical model of the hydrogen atom, if the principal quantum number is n, how many different orbital angular momentum quantum numbers are permitted?

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What is the electron configuration for Li, which has 3 electrons?

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How many electrons can be found with principal quantum number n = 3 in a suitably heavy atom?

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Correct AnswerverifiedShow Answer

What is the maximum number of electrons that can occupy the g subshell?

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What is the greatest magnitude of the orbital angular momentum LLL that you can find in a state with n=6n = 6n=6 ?

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The only invalid electron state and shell designation among the following is

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A hydrogen atom is in the 6h state. Which one of the following is not a magnetic quantum number for that state?

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Correct Answer
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Neon has 10 electrons. What is the value of $Z$ of the next higher element that has chemical properties very similar to those of neon?

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Correct Answer
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What is the greatest magnitude of the orbital angular momentum $L$ that you can find in a state with $n = 6$ ?

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Correct Answer
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Correct Answer
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